Standard Access Keys

You're creating a website and doing a thorough job. That means specifying access keys
for your advanced users.
You don't want to waste time reinventing the wheel and you want to cooperate with the
rest of the world and adopt a standard. But even though you searched the web you couldn't
find what you were looking for: a clear, complete, well-reasoned and up-to-date standard.
Until now!
Here is a prescriptive standard for keyboard navigation for use on contemporary websites.